ETD49 Switching Mode Power Supply High Power Vertical High
Frequency Transformer
1.Product Description
The ETD49 magnetic core high-frequency high-power vertical direct
insertion transformer is a core component designed specifically for
efficient and high-power density switching power supplies. It
adopts the classic ETD49 (E-type trapezoidal) ferrite core, which
has excellent magnetic circuit efficiency and low leakage
inductance characteristics, and is particularly suitable for
high-frequency (usually tens of kHz to hundreds of kHz) working
environments. The Vertical Straight Plug packaging design
facilitates automated PCB board assembly and effectively saves
circuit board space. This transformer can handle high power ranging
from hundreds of watts to kilowatts, and is widely used in fields
such as communication equipment, industrial power supplies, new
energy conversion, and high-end server power supplies, achieving a
perfect combination of high-efficiency energy transmission and
compact size.
These are the five core characteristics of the ETD49 magnetic core
high-frequency high-power vertical direct insertion transformer:
1. * * High efficiency and high-power transmission capability * *:
Using ETD49 ferrite core, it has a large effective cross-sectional
area (Ae) and volume, large magnetic flux capacity, excellent heat
dissipation performance, and can stably carry high power ranging
from hundreds of watts to kilowatts, meeting the needs of
industrial grade high-power power supply.
2. * * Excellent high-frequency characteristics * *: Specially
designed for high-frequency switching frequencies (usually tens of
kHz to hundreds of kHz), using low loss high-frequency ferrite
materials, can significantly reduce magnetic core loss (iron loss),
reduce heat generation, and improve the conversion efficiency of
the entire power system.
3. * * Low leakage inductance and high magnetic efficiency * *: The
circular center pillar structure of the ETD (Economic Transformer
Design) magnetic core allows the winding to be wound more tightly
and evenly, effectively reducing leakage inductance. This not only
improves energy transmission efficiency, but also reduces voltage
stress on the switch tube, making the system operation more stable
and reliable.
4. * * Vertical Straight Plug saves space * *: The vertical
straight plug pin design allows it to be firmly installed upright
on the PCB board, greatly saving board space and facilitating high
power density and miniaturization design of power products, and is
suitable for automated SMT surface mount production.
5. * * Good thermal management and stability * *: The magnetic core
has a large size and a large heat dissipation area. When installed
vertically, the heat generated by the coil can be directly
conducted to the copper foil of the PCB for heat dissipation
through the pins. At the same time, there is sufficient air flow
space between the magnetic core and the coil, ensuring the thermal
stability and long-term reliability of the transformer under high
loads.
2.Performance Characteristics
| Feature Category | Performance Characteristic | Description / Benefit |
| Core & Material | Core Type & Material | ETD49 ferrite core (e.g., PC40, PC95 material). Offers excellent
magnetic properties, high saturation flux density, and low losses
at high frequencies. |
| Electrical Performance | High Power Handling | Designed for high-power applications, typically in the range of
hundreds of Watts to over 1 kW, depending on the specific design
and cooling. |
| High-Frequency Operation | Optimized for operation in high-frequency switching power supplies
(e.g., 50 kHz to 500 kHz+), enabling smaller size and higher power
density. |
| Low Core Losses | Ferrite material and core geometry minimize hysteresis and eddy
current losses (iron losses), leading to higher efficiency and
reduced heating. |
| Low Leakage Inductance | The ETD shape with a round center leg allows for tight, symmetrical
winding, minimizing leakage inductance. This improves efficiency
and reduces voltage spikes on switching components. |
| High Isolation Voltage | Can be designed and wound to achieve high primary-to-secondary
isolation (e.g., 3-4 kV AC), meeting international safety
standards. |
| Thermal Performance | Excellent Thermal Management | The large surface area of the ETD49 core and the vertical design
promote effective heat dissipation through convection and
radiation, ensuring stable operation under load. |
| Mechanical & Assembly | Vertical Straight Plug-in | Vertical mounting saves significant PCB real estate compared to
horizontal types. The straight pins are suitable for automated PCB
assembly (insertion and wave soldering). |
| Robust Mechanical Structure | The plastic bobbin provides secure winding containment and robust
mechanical integrity, protecting the windings from physical damage
and vibration. |
| Application | Design Flexibility | The bobbin allows for multiple winding configurations and the use
of multiple strands of litz wire to minimize skin and proximity
effect losses at high frequencies. |
| Wide Range of Applications | Ideal for use in high-power SMPS, inverters, telecom power systems,
industrial equipment, renewable energy systems, and server/server
PSUs.** |
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4.Company Profile
